Nut-lock



(No Model.)

F. W. COLLINS. NUTLOGK.

' E, 7 45 0: K/% %M/%% N 512115. Pholo-Lilhngnphar, Washington. I: c.

UNITED STATES- PATENT OF ICE.

FRANK \V. COLLINS, OF CORTLAND, NEW YORK.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 423,738, dated March 18, 1890.

Application filed December 28, 1889. Serial No. 335,206. (No model.)

To aZZ whom it may concern.-

Beit known that I, FRANK W. OoLLINs, residing-at Cortland, in the county of Cortland and State of New York, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to nut-locks for use on bolts or machine-screws.

v The object of the invention is to produce a washer which will have a locking engagement with the nut on the bolt and a tongue engagementwith the bolt or machine-screw.

Figure 1 is a side elevation of a screw-bolt having a longitudinal groove. Fig. 2 is an end view of a nut. Fig. 3 is an elevation of a grooved screw-bolt with'double nut and locking-washer. Fig. 4 is a face view of the nut having radial ridges. Fig. 5 is a side View of bolt with plates or washers to be fastened and locking-washer. Fig. 6 is a face viewQ-and Fig. 7 an edge View, of lockingwasher. Fig. Sis a side view of bolt, double nut to lock loosely, and washer. and Fig. 10 a face view, of modified washer.

A indicates a screw-bolt or machine-screw, having headB, threaded portion C, and longitudinal groove D in the' threaded portion.

E indicates a threaded nut to fit the bolt and being of usual construction, except for a series of radial ribs F on one face of said nut. These ribs may have their inclined faces in one direction and faces perpendicular to the plane-face of the nut at the other side like ratchet-teeth.

G indicates a washer having a central openingI-I of about the diameter of bolt A, and having a nib or teat I extending inward, of such size as to rest in groove D when the washer is applied to the bolt, and so prevent the turning of the washer on the bolt. The washer G isdoubled back on itself, as shown in Figs. 3, 5, 7, and 8, and one or both the outer faces of the two leaves have ribbed or ridged faces, the ribs or ridges being radial and the c0unterparts of the ribs Fon the nut. If the ribs are in the nature of ratchet-teeth, they are faced in reverse direction from the ribs or teeth on the nut. As shown in Fig. 7, the

Fig. 9 is an edge view,

ing on the bolt. When the nut E is set up.

close, the ribs on the nut and washer interlock, and the nut cannot be turned back except by a breakage of parts.

Fig. 8 shows nut E,with a ribbed or ratchet face, applied to the bolt and a washer G,with a ratchet-face, interlocking therewith. The

reverse face of the washer has teeth in reverse direction, and this face is engaged by thenut E. The two nuts and washer are thus firmly locked together, and can be only turned back or unlocked by the exertion of force great enough to break the nib I fro the washer.

It is sometimes desirable to look a double nut when it is not very closely set home on the bolt. This may be done by such a construction' as is indicated in Fig. 3, in which the ratchet or ribbed face of the washer G engages nut E when the nut is not set too closely home, and nut E is afterward turned on. By turning up or tightening the nut E the washer G may be loosened, when nut E can be turned back and afterward the washer removed.

Figs. 9 and 10 illustrate a modification, in which G is a washer of a single leaf, but havin g spring-tongues K struck up or cut through the metal on opposite sides. These springtongues answer in lieu of the ribs K on the spring-leaves of the folded or doubled washer G and interlock with the ribs F of the nuts E or E when the washerlis applied to the bolt.

This washer by its spring engagement with the face of the nut or nuts enablesthe nut .to be screwed to any'position on the bolt at which the washer can find the bearing, either I against a nut, as E,:or' 'a' bar, washer, or bear ing M.

\Vhat I claim is 2 v 423,73sp a 1. Thecombinat-ion, with the grooved bolt, groove of the bolt and a nut at each side of of a double spring-washer, said Washer hav-' the washer, having ribs on the face engaging ing a nib extending into the groove of the the projections on the washer, substantially bolt and having teeth projecting from one as described. 5 face, and a nut having serrations on its face In testimony whereof I affix my signature 15 engaging the teeth of the washer, substanin presence of two witnesses.

tially as described. FRANK W. COLLINS. 2. The combination,with the grooved bolt, WVitnesses: of a double spring-washer having projections 1 A. A. SPRAGUE,

10 from both faces and a nibextending into the i C. E. THOMPSON. 

